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Make llvm-dwarfdump -name work on type units.

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Differential Revision: https://reviews.llvm.org/D53672

llvm-svn: 345203
This commit is contained in:
Paul Robinson 2018-10-24 21:51:55 +00:00
parent f5d23d3609
commit 24d7fafc75
2 changed files with 102 additions and 2 deletions
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100
test/tools/llvm-dwarfdump/X86/typeunit-name.s Normal file
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@ -0,0 +1,100 @@
# Demonstrate that -name works with type units.
# RUN: llvm-mc -triple x86_64-unknown-linux %s -filetype=obj -o %t.o
# RUN: llvm-dwarfdump -name=V4_type_unit -name=V5_split_type_unit %t.o | FileCheck %s
#
# The names should appear twice, once for the unit and once for the type DIE,
# because we give them the same name.
# CHECK: V4_type_unit
# CHECK: V4_type_unit
# CHECK: V5_split_type_unit
# CHECK: V5_split_type_unit
.section .debug_str,"MS",@progbits,1
str_TU_4:
.asciz "V4_type_unit"
.section .debug_str.dwo,"MS",@progbits,1
dwo_TU_5:
.asciz "V5_split_type_unit"
# Abbrev section for the normal type unit.
.section .debug_abbrev,"",@progbits
.byte 0x01 # Abbrev code
.byte 0x41 # DW_TAG_type_unit
.byte 0x01 # DW_CHILDREN_yes
.byte 0x03 # DW_AT_name
.byte 0x0e # DW_FORM_strp
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x02 # Abbrev code
.byte 0x13 # DW_TAG_structure_type
.byte 0x00 # DW_CHILDREN_no (no members)
.byte 0x03 # DW_AT_name
.byte 0x0e # DW_FORM_strp
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x00 # EOM(3)
# And a .dwo copy for the .dwo section.
.section .debug_abbrev.dwo,"",@progbits
.byte 0x01 # Abbrev code
.byte 0x41 # DW_TAG_type_unit
.byte 0x01 # DW_CHILDREN_yes
.byte 0x03 # DW_AT_name
.byte 0x0e # DW_FORM_strp
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x02 # Abbrev code
.byte 0x13 # DW_TAG_structure_type
.byte 0x00 # DW_CHILDREN_no (no members)
.byte 0x03 # DW_AT_name
.byte 0x0e # DW_FORM_strp
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x00 # EOM(3)
.section .debug_types,"",@progbits
# DWARF v4 Type unit header. Normal/split are identical so we do only one.
TU_4_start:
.long TU_4_end-TU_4_version # Length of Unit
TU_4_version:
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.quad 0x0011223344556677 # Type Signature
.long TU_4_type-TU_4_start # Type offset
# The type-unit DIE, which has a name.
.byte 1
.long str_TU_4
# The type DIE, which has the same name.
TU_4_type:
.byte 2
.long str_TU_4
.byte 0 # NULL
.byte 0 # NULL
TU_4_end:
.section .debug_types.dwo,"",@progbits
# FIXME: DWARF v5 wants type units in .debug_info[.dwo] not .debug_types[.dwo].
# DWARF v5 split type unit header.
TU_split_5_start:
.long TU_split_5_end-TU_split_5_version # Length of Unit
TU_split_5_version:
.short 5 # DWARF version number
.byte 6 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev.dwo # Offset Into Abbrev. Section
.quad 0x8899aabbccddeeff # Type Signature
.long TU_split_5_type-TU_split_5_start # Type offset
# The type-unit DIE, which has a name.
.byte 1
.long dwo_TU_5
# The type DIE, which has the same name.
TU_split_5_type:
.byte 2
.long dwo_TU_5
.byte 0 # NULL
.byte 0 # NULL
TU_split_5_end:

4
tools/llvm-dwarfdump/llvm-dwarfdump.cpp
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@ -422,8 +422,8 @@ static bool dumpObjectFile(ObjectFile &Obj, DWARFContext &DICtx, Twine Filename,
for (auto name : Name)
Names.insert((IgnoreCase && !UseRegex) ? StringRef(name).lower() : name);
filterByName(Names, DICtx.compile_units(), OS);
filterByName(Names, DICtx.dwo_compile_units(), OS);
filterByName(Names, DICtx.normal_units(), OS);
filterByName(Names, DICtx.dwo_units(), OS);
return true;
}